.sec2 {
    background: linear-gradient(to left top, #c0fff2, #48f1d5);
    min-height: 100vh;   
    background-size: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.sec2_main {
    width: 1200px;
    height: 600px;
    border-radius: 25px;
    background-color: rgba(255, 255, 255, .35);
    overflow: hidden;
    backdrop-filter: blur(0.2rem);
}

.sec2_main_head ul{
    display: flex;
    width: 100%;
    height: 90px;
    line-height: 90px;
    justify-content: space-between;
    border-bottom: 1px solid rgb(231, 231, 231);
}
.sec2_main_head ul li {
    flex: 1;
    text-align: center;
    transition: all .5 ease-in-out;
}
.sec2_main_head ul a {
    font-size: 16px;
    color: #426696;

}

.sec2_main_head ul li:hover {
    background-color: rgba(255, 255, 255, .3);
}

.sec2_main_head ul li:hover a {
    color: #000;
}


.current1 {
    background-color: #5de4d6;
}

/* body部分 */
.sec2_content{
    float: left;
    width: 1200px;
    height: 500px;
}

.content_left {
    float: left;
    width: 20%;
    height: 500px;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
    
}

.content_left p {
    flex: 1;
    font-size: 14px;
    color: #426696;
}

.content_right {
    float: right;
    width: 80%;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sec2_content img  {
    width: 90%;
    height: 90%;
    border-radius: 25px;
    transition: all 1s;
}

.sec2_main_body .hidden {
    display: none;
}

/* 小圆点 */
/* .sec2_circle1 {
    background: white;
    background: linear-gradient(to right bottom,
            rgba(203, 255, 255, 0.8),
            rgba(237, 255, 254, 0.3));
    height: 20rem;
    width: 20rem;
    position: absolute;
    border-radius: 10%;
    bottom: 30%;
    left: 20%;
}

.sec2_circle2 {
    background: white;
    background: linear-gradient(to right bottom,
            rgba(206, 255, 228, 0.8),
            rgba(255, 255, 255, 0.3));
    height: 20rem;
    width: 20rem;
    position: absolute;
    border-radius: 10%;
    top: 30%;
    right: 10%;
    transform: rotate(45deg);
}

.sec2_circle3 {
    background: white;
    background: linear-gradient(to right bottom,
            rgba(255, 225, 225, 0.8),
            rgba(255, 255, 255, 0.3));
    height: 20rem;
    width: 20rem;
    position: absolute;
    border-radius: 10%;
    bottom: -5%;
    right: 40%;
} */